Marketing by a service firm to effectively train and motivate its customer-contact employees and all the supporting service people to work as a team to provide customer satisfaction is called marketing.

Internal

Explanation:

As the name implies, internal marketing is one in which a service firm trains employees in a product's company and its customers' contact to ensure maximum customer satisfaction. Internal marketing means that every member of staff is involved in marketing  and not just the marketing department of the firm.

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answerprotecting competitors;

answer(d) encourage cooperation by improving the chances of mutually agreeable transactions;